The study found that the expression of anger in popular music increased gradually over seven decades, peaking in 2015. The expression of sadness, disgust, and fear also increased over time, with joy becoming a milder tone in recent years.
A computational model analyzing 6,082 European football players' salaries showed that Lionel Messi is the world's most overpaid player, followed by Cristiano Ronaldo and Luis Suarez. The study found a strong link between skills and salaries, but noted exceptions like the Ekstraklasa league.
A new AI algorithm analyzes the Beatles' albums, demonstrating a progressive change in their musical style from one album to the next. The algorithm was also applied to other bands, such as Queen and U2, with notable results.